We had a full time nanny for around 6 months last year for our 4yo and 1yo. She was fine, but not our ideal childcarer, because she didn't really listen to what we or the DC wanted or needed, she just did what she thought was right (which was good enough at the time, considering we were in transition.)
Examples of what she did that we didn't want: weaned youngest early. I was EBF-ing and she was giving him food because she thought she knew best. When he was finally weaning age. she was doing baby led weaning rather than purees (which was what i asked/prepared in fridge.) So I'd come back and there'd be a piece of carrot in his mouth when I'd asked her to use some apple puree. (I have no problem with BLW but purees are just easier for me and don't make me as anxious about choking etc.)
She also used to insist on taking both kids out all day while I was EBF-ing the youngest (he was 4 months) and not check her phone to come back when I needed her to come back for me to BF. Then ignore subsequent requests asking her to come back at certain times but always say she was very forgetful. She would go long periods (6 hours) not being in touch with us asking where she was, while she had both DC out with her.
She took a lot of managing and reminding about very basic things, like returning at a certain time, DC's meals and routines.
She also used to lecture us about bringing up DC and label the DCs (to us, not to them) as "intelligent" and "not intelligent" and "good" and "bad," according to what she observed. She used to sometimes judge us and tell us that we were not doing things in the proper way and were really disturbing our DC (we travelled a lot last year.) But I knew it was a temporary situation with her, so I just tuned her out a bit.
Oldest doesn't like her. Will not naturally go to her, was very reluctant to be left with her. It doesn't help that former Nanny is obsessed with youngest DC, who she spent all her time with, leaving oldest DC - when she was in her care - to wonder around aimlessly. Eldest got fed, bathed, changed, basic needs etc, but by the end did not get any further attention than that.
Christmas last year, former nanny's contract was up. We said that we weren't sure we needed a nanny anymore as oldest was about to start school. She told us that she wanted to go into a different line of work anyway. We helped her with a few applications and parted on good terms.
Yesterday former Nanny said she wanted to come and see the DC. This is surprising as she had no bond with 4yo at all, and 1yo just gets on/will go with everybody. She came to the house. 4yo ran away and would not go to her. She picked up youngest and carried him around. I offered her a cup of tea, like a guest, she said no. She then implied that she had turned down other job offers because she felt her loyalty was with us and she was waiting to see if we needed her again.
I had honestly told her in no uncertain terms that we would not need her again because 4yo is starting school, but she was almost blaming me and coercing me into giving her a job again by making me feel that she'd held out and turned down other offers for us.
Then, she said 1yo needed a bath and started to undress him. I was a bit 
as she took all his clothes off and went into our bedroom to run him a bath but I didn't really know what to say.
She then stayed for three hours. Bathed 1yo, fed him, dressed him, read him a story and put him to bed.
As she was leaving she said to eldest "shall I take you out next week?" Eldest said "no thank you." She said "come on, we'll make a date,." Eldest DC again said, "no." Former Nanny said to me that she would text me a date about taking eldest DC out.
Dh and I are in disagreement. DH who thinks his DC are the most beautiful creatures on earth, says he can understand someone who has been away from them missing them like this and wanting to be around them again. I feel like she is just trying to get her job back. Am I being a heartless cow? Is this how you're supposed to transition away from a nanny? Gradual withdrawal?
What do you think?