Fans of “How I Met Your Mother” likely recognize her as Ted Mosby’s sister, Heather.

But as much as Cahill’s heart lies in acting, it also lies in philanthropy.

Cahill is a dedicated charity worker, using her wealth and notoriety to draw attention to good causes.

Erin Cahill 2004

She wanted to finish college, but the bright lights of Hollywood were beckoning.

They advised she leave college and get to auditioning, so that’s exactly what she did.

It was a risk, but it more than paid off.

Young Erin Cahill in a director’s chair

At the time of her audition, she was working three separate jobs.

However, portraying Chloe was complex.

We acted them like normal scenes," she explained toSo Fetch Daily.

Erin Cahill as Jen Scotts

“All the actors act on a sound stage with one hundred and something cameras capturing every movement.”

After that, Seal’s romantic escapades were of high interest to fans and tabloids alike.

Who would he date next?

Chloe “Karma” Lynch in Call of Duty

This all served to get Cahill’s name in the news but they weren’t actually dating.

She also had a five-episode run on the show “Red Widow.”

Outside of work, she found time to give back.

Composite image of Erin Cahill and Seal

“We call ourselves ‘Charitable Living’ and we get together every month and we create a project.”

Before long, Charitable Living was also going from strength to strength.

Cahill and her friends volunteered at food banks andheld fundraisers to raise money.

Erin Cahill and friends working at a food bank

So if you’re looking for something good to do, just consider donating," Cahill wrote.

She began dating Welsh musician Paul Freeman.

In 2015, he proposed, and Cahill responded with an emphatic “yes.”

Erin Cahill in a BuildOn shirt at a BuildOn event

I will say yes every day for the rest of my life.

I love you, My Prince," she wrote onInstagramat the time.

“I am constantly in awe of who you are for me and who you are in the world.

Erin Cahill and Paul Freeman kissing

“I love you with every fiber of my being.”

She reposted a report from CNN onto herInstagram, which included a picture of adults and children protesting.

During the pandemic, Cahill also used her platform to draw awareness to many of the biggest issues.

Erin Cahill and a friend in Nasty Woman shirts

She was also angry about the shooting death of Breona Taylor,repostinga post from Oprah about the case.

As with the events after the Donald Trump election, these things clearly appealed to her sense of justice.

From there came more and more TV films.

Erin Cahill at Hallmark’s Countdown to Christmas

And we celebrate each other, too.

I watch their movies!