Welcome to the forum!

Sorry I missed this earlier (BUSY time for pool dudes - I try to scan all the new posts, but apparently miss some- PM-ing me was the right thing to do )

If, for whatever reason, the A-B-Cs of liner tucks aren't working for you, let the pros do it. Though, from the pics, everything looks good to be able to reattach the liner, don't risk it's integrity further!

As long as the water is clean and sanitized, of course your baby can take a dip

If I lived close enough, I'd come over and pop that liner back in for you LOL