Inexpensive streaming amplifier

EBay has a new, latest version, powernode at a "buy it now" price of $750.

It has HDMI for the TV as well.

Link for Powernode

Different look, I'd recommend the Audiolab 6000A all in one unit.....but I haven't heard the Powernode to compare it with; though the 6000A is very nice around $1,000

Wiim Pro with a midline Cambridge Audio  integrated

SVS Prime Wireless Pro might be an ootion

Stream High-Resolution audio wirelessly via WiFi, Apple Airplay 2 for iPhones and iOS, and Chromecast for Android phones and other devices. Connects directly to your TV via HDMI and features ample connectivity and control options. 200-watt (50 watts x 4) amplifier and precision tuned electronic crossover deliver powerful dynamics, deep bass, and stunning clarity.

I think only one person gave the proper response. Go with an AVR from Marantz or similar. Way more functionality than a Powenode. In fact you get the Marantz NR1510 for $600 which gets you streaming capabilities across multiple platforms, multiple input options for HDMI, digital input, phono, CD, etc. The Marantz also has Audyssey room correction so she can fine tune her 2.1 system and be able to expand as she desires up to 5.1 for less than the Powenode. As you say, she's not an audiophile. And an AVR expands the experience to have a modest home theater set up by getting her a . The Powenode does one thing well. She needs more flexibility for an apartment dweller.