My daughter is 13 years old Can she be a member,so we can joing together?

Yes

Hi Dione, Thanks for reaching out. You can join PF starting at the age of 13 with a parent/legal guardian’s permission; they must be present with you during the sign-up process. Members aged 13 and 14 must be accompanied by a parent or guardian when they work out. Members who are 15 to 17 years old must have a signed waiver from a parent or guardian on file. Please note that any PF Black Card® guests must be 18 years old with a valid ID, unless they’re accompanied by a parent or guardian.

I honestly don't know, sorry