SalamanderArm

Concept: Basically, a "haunted" house that wants to take care of its inhabitants, instead of cliched "LEAVE MY HOME OR I HAUNT" reaction. The entity was a woman in her past life, who always wished to have a nice and loving family, but unfortunately wasn't able to (unsure for reason why yet). While I do want to make her somewhat empathetic, she also gets frustrated easily and becomes hostile when not able to fulfill her wishes of being part of a family.
UPDATE: Suggestions to make her more of a kindred spirit is good, and I'm going with it. Also, trying to leave backstory a bit more open-ended.

Removed Parts:

SCP-XXXX-2 is a laminate wood sign that reads "Home Is Where The Heart Is" in a stylish white font. After Incident-XXXX-1-A, the word "MY" in bold black font appears instead over the word "The". This phenomenon is only present to Foundation personnel, which manifests in photographic content of XXXX-2 as well.

If no instances of XXXX-3 exists, and XXXX-2 is not brought into a residence deemed suitable, XXXX-1 becomes increasingly irritable and arrogant. After five to seven days, SCP-XXXX-1 becomes aggressive and actively violent, swinging XXXX-2 around at high speeds to injure and decapitate personnel, demanding to be brought into a family. XXXX-1 can make XXXX-2 phase through matter in order to escape physical containment. After another XXXX-3 is created, XXXX-1 goes back to normal behaviour, seemingly unaware of her actions.

SCP-XXXX-1 must be occupying an instance of SCP-XXXX-3 at all times, unless during the process of relocation or setup for surveillance. Only allow creation of SCP-XXXX-3 in households approved by Dr. ████████. SCP-XXXX-2 is to be be safely secured inside SCP-XXXX-3, in a location out of reach by the residents. Once designated, SCP-XXXX-3 must be wired tapped and cameras set up while XXXX-1 and -2 is outside of the area to avoid detection. Surveillance of XXXX-3 is to increase in frequency as time since creation of the house increases.

SCP-XXXX-2 is prohibited, under any circumstances, to stay in one instance of SCP-XXXX-3 for more than 8 months. Begin relocation after 6 months have passed, or if SCP-XXXX-1 becomes unstable, with XXXX-3 being cleared of all furniture and belongings, and the residents being supplied with Class-D amnestics.