Like Gill said, don't trust other people's family trees (whether they're on FamilySearch or anywhere), trust sources that were made by people at the time of the events they describe. I think it's good to include a link to a FamilySearch tree on a profile, when there is one, because sometimes records can be seen in a FamilySearch tree that can't currently be found through the Search menu on FS. But bear in mind that anyone can add or remove anything from a FS tree, so even if it looks good and has a nice list of sources in today, it might be a mess when you come to look at it again another time.
I agree that Ann needs to be detached from her current parents ( Widdowson-264 and his wife ) - it makes no sense for her to be their daughter.
I think this is Widdowson-1693 in the censuses of 1851: (
https://www.familysearch.org/ark:/61903/1:1:SGF2-GJ2 ) and 1881: (
https://www.familysearch.org/ark:/61903/1:1:Q27C-HBSY ) and there's no sign there that he might have lived in Nottinghamshire or had a daughter Ann while there. She could be his daughter, but it looks like there are a lot of Widdowson families, so it's better to leave her unattached to anyone as long as you're unsure. It's fine for a profile not to be connected to any others, as long as there's a good source on it so people can tell who it's supposed to be - and every profile should always have at least one good source on, anyhow.
Please try to fill in the birthplace field on profiles you make! It's fine to use the place of baptism there, and to use the baptism date in the "birth date" field, ticking the "before this date" button to show it's not an actual birth date. Even just a county or a country name in the birthplace field helps people when they're checking suggested matches.
I tried looking for brothers or sisters of Ann christened in Cuckney, but freeReg doesn't seem to have Cuckney baptisms and FamilySearch didn't seem to want to cough them up for me.. if you have a subscription to another website, and can find brothers and sisters, you might be able to find her family in the censuses of 1841-51, but I couldn't see an obvious match for them in Nottinghamshire in 1841.