Heavy dose of motherly instincts might do that to ya.

And as she had her at a pretty young age, it probably gave her time to grow up and mature into who she is now.

Sorry to spoil this thought, but…
"Slept with the bass player of a band she was a groupie of when she was 18"
>Current age: 44
>Daughters age: 26
>26 + 18 (age she slept with bass player) = 44
Yeah, given how these things usually work out, she probably had to raise Maggie on her own. Still, she seems to have done a pretty good job with herself and her daughter, and hopefully the bassist remembers to pay his fucking child support.