help help help! tennant nightmare - emergency plummer - how long without water?

Maintenance

I have brought a property at the end of december. 2nd Jan gave the tennant dowstairs the form 6A and Section 48.

The two months notice is about to expire in 4 days and I can apply to court.

The tennant has mental health issues and alchol abuse problems.

She is claiming the toilet wasnt flushing and took the lid of and sprayed Cilit bang, and then it started pissing out water. She said it was flooding the flat and I needed to get there quick.

She also said she broke into the top floor flat to see if she could turn the water of from up there?

She is now calling me every name under sun, and demanding I pay for an emergency plummer as she has no water.... ( she and a neighbour turned the stop clock off outside)

I am really confused and had to call police for my own protection she is bery abrupt and quick to shout and point and wave her hand all over the place, luckily she left me a voicemail calling me a C word 100 times and demanding a plummer, I can use as proof.

QUESTION-

I have pictures of the broken plastic pipe she broke in the toilet. I have a phone call with her admiting to taking it up an trying to clean it / repair it. 

Am I liable for something she broke?

Can I ask her to pay to fix it and then we dispute it in court as it wasnt my failt and wasnt wear and tear?

I'm wondering if she is behind on this months rent and calling and harrasing me change any agreemement, even if we both dont have a tennancy contract?

Thanks in advance.