Is she trying to tell us she's ready for TT?

DD has had 'poo' issues for a few months now. She's been on Parachoc for 2 months as after a bad bout of constipation, she became scared to poo :( We would have 5 good days of stress free poos followed by 2-3 days of straining/holding it in.

Earlier this week, she eneded up with severe nappy rash from only letting a little bit go at a time. We couldn't keep up with he nappy changes and often had no idea one was needed as the poo was so small (like a smear) there was no smell but enough moisture to burn her little bottom :(

So lately she seems to be quite happy (and relaxed enough) to poo in the bath. We've had two decent poos this week in the bath. They aren't hard so I can't understand why she's not pooing in her nappy. She must be scared of pain, especially with the nappy rash earlier this week (it's much better mow though) but I'm also wondering if she just doesn't like nappy poos anymore.

What do you girls think? Is she showing readiness for TT? I wasn't going to try until she was 2 but do you girls think I should try sooner?