It seems that Finnegan shares a special connection with her grandmother in particular.
“You guys get along so well,” Maisy Biden said to her sister.
Finnegan agreed with that, saying, “We get each other.”

So, it’s no surprise Finnegan Biden would want to raid her grandmother’s closet.
The color and the slit in the skirt highlighted her toned legs and strappy high heels.
“Finnegan Biden wearing Nana[']s dress is so grounded,” they wrote.

Photos from that event seem to show the same dress, but sans slit.
Joe Biden, then vice president, attended the annual fundraiser with his wife.
They noted that Joe Biden always made an effort to come to their activities and games.

“He was at everything that he could make it to,” said Maisy Biden.
How did you just end up here?'
and he was like, ‘Don’t worry.
I knew it was a big game."
The first lady also isn’t above having a little fun with her granddaughters.
“Oh my gosh, she loves pranks,” Finnegan said.
“On Halloween, she came downstairs in a fly costume and woke us up.
I’ve never been so terrified in my life.”